Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 389, Figs. 7, 8: U. Triassic (L. Carnian), San Cassiano Formation, Italy. 7, Subequatorial section of holotype, x 250; 8, transverse section showing perforations, x 300 (from Zaninetti and Brönnimann, 1972).